Jun 13, 2018  Modern Mac OS versions come with Python 2.7.x installed (or Python 2.6.1 if an older Mac OS X version), but many Python users may need to update Python in Mac OS to a newer version like Python 3.6.5. This article will discuss how to get an updated Python 3 installation on the Mac by covering two different ways to quickly and easily install Python 3 onto a Mac.

Installing NLTK 3.0 on a Mac. This page describes the process I’m working through to try and get NLTK 3 working on Mavericks 10.9.5 Current situation: So far I’ve managed to get and installed on the Mac.

However there is a problem related to security certificates so that nltk.download() will not download corpus data. A little investigation on Google shows that there are problems caused by the interaction of OpenSSL supplied by Apple and Python. Recommended level for fortnite mac. Initially I thought that the main reason I would need nltk.download() is for testing, since we’ll have our own corpora to work on. However there are other files that may need to be downloaded so it may be a problem worth solving. The Natural Language Toolkit or NLTK is a python library created by Steven Bird to aid researchers in their analysis of large quantities of language data.

I’ve been trying to help a linguist install nltk on a mac, I thought that should be straightforward. It was pretty easy to do on Windows 10 so I was hoping there wouldn’t be too many problems.

NLTK is written in Python and there are currently two versions one for Python 2.7 and one for Python 3.4 and later. Python 3 isn’t just a later version of Python 2. Connecting thermal printer driver for mac. Python 3 was completely rewritten, independently of Python 2 code. So scripts written for Python 2 don’t work under Python 3 in general. One of the benefits of Python 3 is that it deals with Unicode characters by default.

This Unicode handling is something that I expect we will need as the languages have plenty of non-Ascii characters. OS X comes with python (and perl, Ruby and PHP) as part of the OS.

However python isn’t provided as a convenience to the user, it is a necessary part of the OS. So should it become corrupted the OS will need to be reinstalled. Another consequence of this is that the built-in Python will likely be older than the current version of Python. I had OS X version 10.9 (Mavericks) installed which came with Python 2.5 So here’s the first hurdle, nltk requires python version 3.4+ or later. So it will be necessary to install a later version of python and keep it separate from the python required by the operating system.

Is a third party package manager required? John Laudun on his blog suggests using MacPorts to install all the prerequisites for nltk, including python. However MacPorts requires Apple’s Xcode to be installed. I found Xcode on the App store, after pressing the ‘Get’ buttton a message said that it wasn’t available for this machine. The Xcode Command Line Tools and can be installed from the terminal with the command: xcode-select –install As John notes, there are error messages from MacPorts when only the command line tools are installed. Warning: xcodebuild exists but failed to execute Warning: Xcode does not appear to be installed; most ports will likely fail to build. However that didn’t seem to be a problem, the ports I installed built successfully in spite of the warnings.